He woke to the sound of policemen knocking on his door.
When he looked outside his flat, he saw footprints formed with what looked like blood.
To Mr Lim Kim Siah's shock, there was even more blood in the lift and stairs next to his flat at Block 165, Bukit Batok West Avenue 8 yesterday morning.
The 55-year-old draughtsman said: "The policemen asked me if I (had) heard anything. But I (did not). I slept through without waking up or hearing anything."
The spot outside his flat on the seventh floor was not the only place with mysterious blood-like stains.
A 600m-long blood-red trail, which spanned six blocks, was found near Mr Lim's block, reported Shin Min Daily News yesterday.
The void deck of Block 165 and two blocks beside it, Block 167 and 168, were also stained.
Another resident, who lives on the ninth floor at Block 165, said he heard two loud shouts early in the morning.
The 68-year-old man, who wanted to be known only as Mr Choo and who works in the newspaper distribution business, said: "I didn't think too much about it at first because there would sometimes be people talking loudly at the pavilion downstairs.
"But as I was going to the market in the morning, I saw many policemen and all the blood stains, and thought that it might possibly be related."
Shin Min Daily News reported that a fight between two men was believed to have started at Block 175, across the road from Block 165, where the stains was found at the lift.
A total of four blocks in the area were cordoned off by the police.
When the police arrived, no one with injuries was found.
The Singapore Civil Defence Force said they did not send anyone to the hospital with injuries related to the Bukit Batok incident.
Mr Lim, who has been living in the neighbourhood for 30 years, said policemen went door-to-door yesterday afternoon to interview residents.
It is the first time something like this has happened in his neighbourhood, he added.
At 7pm, stains could still be seen at the staircase outside his flat, even though the area had been cleaned earlier in the day.
He said: "The neighbourhood is safe and I'm not too worried because I know all the neighbours and I don't think it was one of them.
"But my wife was frightened to hear that there was so much blood, especially right outside our flat."
A police spokesman said they received a call at about 7.20am yesterday, and that they are looking into the matter.
This article was first published on December 15, 2014.
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